How many grams are present in 7.2 mol of table salt, nacl?

-

421.2 g

Explanation: -

Atomic mass of Na = 23 g / mol

Atomic mass of Cl = 35.5 g / mol

Molar mass of NaCl = 23 x 1 + 35.5 x 1

= 58.5 g / mol

Number of moles of NaCl = 7.2 mol

Mass of NaCl = number of moles x molar mass

= 7.2 mol x 58.5 g/ mol

= 421.2 g

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?